Which of the following plant hormone is extracted from fungus?
A
Ethylene
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B
Gibberellin
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C
Cytokinin
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D
2, 4-D
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Solution
The correct option is B Gibberellin Gibberellins were discovered from diseased rice seedlings. The bakane (foolish seedling) is a disease of rice seedlings, was caused by a fungal pathogen; Gibberalla fujikuroi. Japanese scientist, E. Kurosawa reported the appearance of symptoms of the disease in uninfected rice seedlings when they were treated with sterile filtrates of the fungus. The active substances were later identified as gibberellic acid (gibberellin).